MIDI Interface

Does any one know of a way to make a usb to midi out .its like this computer >> Usb to Midi >> and to a device which can accept midi like the Arduino MIDI Drum. i want to make a simple circuit that i can build that is easy to make and requires minimal partshere is the link to the Arduino MIDI Drum

Topic by chrischavez   |  last reply


Interface board

I want to experiment with controllers/interfaces and stuffis this a good interface board (for me?)http://www.velleman.be/nl/en/product/view/?id=351346

Topic by Firehunter   |  last reply


Wireless Interface? Answered

Hello, Instructables.      I know it seems like I ask too many questions and post too little ibles, But trust me. I'm working on one right now. And thats why I am here. I am working on a wireless snes controller for PC, and am having problems finding a wireless interface for it. I know theres the XBee, which, being on a limited budget, is off the table. theres Bluetooth, which i have VERY little expirience in, but considering that just makes it sound like it would be fun, and, last but not least, there is InfaRed, which, having recently recieved a IR LED assortment from Electronic Goldmine, might be an option. i will look more into BT, since i do have a bluetooth enable pc anyway.

Question by Krayzi99   |  last reply


Submit interface very user hostile at least for FireFox

I am trying to create a new Instructable and I find the user interface absolutely user hostile. At least with FireFox. And I hate to use IE. First off I uploaded all the images for the entire article at the same time. They all ended up in the introduction. Then I tried removing all but one but when I saved my changes they were all back. So I had to use IE to remove the images and save the changes. It was not at all clear that removing the images from a step wouldn't remove them permanently. It just so happens that they remain in your "library" but there is nothing telling you that. The documentation for the submittal process is inadequate. Then I did a considerable edit of the text of the intro and saved it. When I preview the change I get the old version and have to manually refresh the page to see changes. I then edited again adding an image from the library and saved the change. It turns out that all the text I edited before did not show up in the edit session because I didn't MANUALLY refresh it before making changes. So I ended up saving the old text minus a lot of changes. So now I have to re-edit everything a second time. This is ridiculous. A real waste of time. Another thing is I can't arrange images with text around them. All images end up at the bottom of the step with only one large size image and a bunch of thumbnails that must be clicked one at a time. This is not how anyone likes to view a step-by-step description. I also can't create a bulleted list for materials. I really think the interface needs a lot of work. These are just basic requirements of any word processing interface. The format needs to be changed to allow a better flow of the instructions with text interspersed with images like a MAKE magazine article. Even this forum interface is defective. Because I didn't enter at least two keywords when I finally did enter them and tried to preview my post this entire post was gone! Fortunately I was using the Save Text Area extension so I had the entire body of the post in my text editor and was able to paste it back. This is ridiculous.

Topic by Laral   |  last reply


USB Switch / Interface

Could anyone point me in the right direction. I work from home at my computer and spend much too much time sitting without regular breaks. Therefore what I would like to do is have a pressure sensor on my chair that plugs into a USB socket so that when I sit down it starts a timer on my PC that alerts me after a period of time that it's time to get up for a walk. Many thanks in anticipation.

Topic by kjhdfadn   |  last reply


The future of Computer Interface ?

Although this is a little dated already (Feb. 2010),  I thought this was rather interesting in how it took the IBM "table" computer,  and freed it from the confines of the table, as it were. Here, at this link, is the video showing this interface, ce / OS being demonstrated. 

Topic by Goodhart   |  last reply


Web interface help? Answered

I would like to know if its possible to build a website with the raspberry pi.I would like to know if  it was possible to design something in such a way that if i clicked a button on the website or web interface it would run a program on the raspberry pi?

Question by akinich   |  last reply


Digital Taste Interface? Answered

Hello Instructables. I had a question for my newest project. I am looking to make a Digital taste interface with Arduino like this http://www.nimesha.info/digitaltaste.html#dti. The video says that the current needs to be altered between the range of 10 and 140 microamps. I have bought a 10k and 100k digital potentiometer, as this was my first idea. Does anyone have a better idea as to control current at ranges that low? 

Question by headslant   |  last reply


interface arduino with MLX90620?

Does anyone know of an arduino sketch or library that can drive a 16x4 array of LEDs from the input from a MLX90620 sensor?  I want to make a basic thermal viewer, that doesn't need to read exact temperature, just dim them according to the input.   

Question by jduffy54   |  last reply


USB Interface Problems

I recently purchased a SparkFun iPod Breakout board http://www.sparkfun.com/commerce/product_info.php?products_id=8295I am currently trying to attach it to my computer via USB. I got a usb socket, and linked it up to the breakout, but when I plugged it into my computer the iPod begins to charge, but does not recognize it is connected to the computer. I have got the USB + to 32, USB GND to 16, USB D+ to 27 and USB D- to 25. I have checked all the connections, which are fine. I have even attached another USB cable to it (which I know works) and the same thing happens! In desperation I switched the data wires, but exactly the same thin The iPod works as normal with its original cordThe weird thing is that when I reboot the computer, the iPod recognizes the computer and goes into the 'Do Not Disconnect' screen, but as soon as the computer leaves the bios it goes back to charging. Any elite instructable members got any ideas?thanks

Topic by phib3r_0ptik   |  last reply


how do i make an audio interface?

Hello i'm fairly new to electronics but i'm a dab hand with the solderer i want to make an audio interface between my guitar and my pc. i was thinking of making a small amp having a 6.5mm socket for the input and instead of a speaker having a usb connection? is this even possible? is that why the ones on the market are so expensive? thanks for your time

Question by 1slipperyfish   |  last reply


Group belonging

I seem to remember being able to scroll down a bit on an instructable, and on the right side see what groups it belongs to. Is there a way to see this now?

Topic by alt0181   |  last reply


I REALLY wish there was a 'save for later' button

It would be really nice to have this feature near the other "favorite," "facebook," and "print," buttons, as since I rarely have the time to fully explore each instructable that looks appetizing to me to the full extent I'd like to when I'm sifting through my e-mails.  Something that I can use to bookmark it for later, perhaps with room for personal comments on my initial thoughts or why it looked interested in the first place?  This would have the advantage of giving people an easy way to return to the site, track their progress on various projects, etc.  I dunno.  Just a thought.

Topic by confuscated   |  last reply


Yet another change to the UI? Answered

When are the powers that be going to finalize the UI? It is a real pain in the tush to come here and find that, yet again, the site has been revamped (how many times in the last couple of months???), leaving the user to grope in the dark just to find that their usual link(s) has (have) disappeared. Take a cue from the big boys and only completely redo the layout (especially navigation) once every year or two, and don't change it completely. Familiarity keeps the customer coming back. Confusion drives them away. That way, people won't get pi**ed off and leave. I mean, how would you feel if you went to drive your car and the control layout changed from the day before. It'd drive you mad, wouldn't it? (See, this is what happens when you have a multitude of volunteers working on the website, no clear direction.) Qa

Question by Quercus austrina   |  last reply


basic stamp 2 lcd screen interface?

My friend just gave me a kawaski dvd player set, and i want to know how to interface the screen with a basic stamp 2 microcontreller. plz help me, id really appreciate it.

Question by sci4me 


I need help creating a basic interface for arduino. Answered

I was wondering what would be the best prgram to learn for creating UI's for sending signals to an arduino, this would be simply like a button or box that a value could be typed in for now i plan to just play with some LED's but my goal is to have an interface with the equivalent of a d-pad so that i could control the pan/tilt of my latest project and later on (my next project) control the speed of motors/servos or activate preset patterns for a spirograph  i would really like to get started and learn how to but im at a loss in where to start

Question by shabaki   |  last reply


"HC Off-Line Occured" while Interface Sysmex Xp100 machine using serial cable

We are Interface Sysmex XP100 Hematology machine, but we got "HC Off-Line Occured" error. We are using Serial Port 9-pin female pins (2-->3, 3-->2, 5-->5) Our Code To Open Serial Port: SerialPort comport = new SerialPort(); comport.BaudRate = int.Parse(cmbBaudRate.Text); comport.DataBits = int.Parse(cmbDataBits.Text); comport.StopBits = (StopBits)Enum.Parse(typeof(StopBits), cmbStopBits.Text); comport.Parity = (Parity)Enum.Parse(typeof(Parity), cmbParity.Text); comport.PortName = cmbPortName.Text; comport.Open(); Port successfully open, but when XP100 machine send output, it shows "HC Off-Line Occured" error. Please provide possible solution.

Topic by vishal2   |  last reply


How would I go about creating a device that will move on its x and z axis according to an input degree?

I am looking to set up a satellite on my roof and am hoping to be able to control it from my room. For now I just need to create a base that can move on its x axis and later the z axis. I can understand for the first part I would need a motor but have no idea on how to interface it with the ability to recognise the compass degree it is facing. For the second part, I believe I may want a hydraulic arm that is hinged to the base (which the satellite lies on) but again have little idea on how to interface it with the ability to detect the angle it is pointed at. My final hurdle is to be able to control all of this. This may well be ambitious when i have little experience with motors and interface but it's something I want to do.

Question by pyrosine   |  last reply


is there a way to connect de arduino to a palm?

 i would like to use the touch screen to control a servo, or to input a text string  to the arduino

Question by brunoaco   |  last reply


need IR transmitter / receiver projects .. Answered

HI I need a project using IR transmitter / receiver interface with pc that whenever there is a cut or an object disturbing the transmission between these transmitter and receiver sensors, PC should show message according to the situation of these sensors and that will happen using the parallel port  if anyone have tried something like this or if you know a site have projects about it please help me, I've never done projects using the parallel port  

Question by CSE251   |  last reply


We need a "keep in sight" button

Often an instructable or a comment is enough interesting to deserve our attention during certain time. In this case, a "keep in sight" button could be very useful, to receive an email for any newness with it. Example: recently wilgubeast published an "featured author" about me. I must enter to look it each day to see and answer all new comments. This is not the only case, other topics or discussions have that need for me, too. Spanish original, in the doubt of translation: A menudo, un instructable o un comentario es lo suficientemente interesante como para merecer nuestra atención durante cierto tiempo. En este caso, un botón "mantenerlo en la mira" puede ser muy útil, para recibir un correo electrónico de cualquier novedad con él. Ejemplo: recientemente wilgubeast publicó un "autor destacado" acerca de mí. Yo tengo que entrar a mirarlo cada día para ver y responder a todos los nuevos comentarios. Este no es el único caso, otros temas o discusiones tienen también esa necesidad para mí.

Topic by rimar2000   |  last reply


How to interface a (snack/drink) vending machine interface to a PC?

Hello experts and entrhusiasts, I don't know much about the currently used food/drink vending machines (Bianchi, SAECO, etc). My question is the following: -is it possible to interface/intercommunicate them with a PC ? -what sort of connection do they have (RS232, CANbus,...) ? -do they use a special language/operating system for managing the vending stuff  ? - are there available schematics, hardware/software descriptions about these machines ? What I want to do is to query them about of the actual state of products(number of selled/not selled) thank you your kindness katus

Question by katus   |  last reply


RGB LED interface with arduino

I need to drive 5 3W RGB LEDs in series using an arduino. The maximum current required is 350mA each for R G and B dyes. and minimum current requirement is 2.4V, 2.4V and 3.5V respectively. What should I use to interface the LEDs with my arduino as the output current of each arduino pin is 50mA maximum Thanks in advance

Topic by pratham123   |  last reply


New interface for comments editor

Last night, Rachel rolled out a new version of the comments editor.  It's supposed to be faster and easier to use (no more pull-down formatting for paid users, for example, just buttons). One nice new feature is that you don't have to wait for all the buttons to load if you're just typing plain text.  The back end is still the same HTML-based CKEditor as before.

Topic by kelseymh   |  last reply


How to interface a microcontroller with a switch? Answered

I have a device with a lever-style switch, like the bottom switch in the picture of this article. http://en.wikipedia.org/wiki/Miniature_snap-action_switch With some multimeter probing, i found that of the three pins, the middle is unconnected. The left pin is always connected to ground. The right pin is connected to ground when the switch is unpressed. When the switch is pressed, the right pin is unconnected. How can I use a microcontroller to stand in for this switch? I'd like to have it activate the switch every 2 seconds. I have the software done, and just need to get the hardware set up. Help is apreciated.

Question by 4lifenerdfighter   |  last reply


How to make audio interface?

Does anybody know how to make a audio interface? If yes, please make a tutorial on it or show all instructions on how to make audio interface.

Question by Karankhatri   |  last reply


Interfacing to a TI Graph Calc

I was looking at how to interface an lcd screen to a microcontroller and learned they have a 14-16 pin interface. Guess what I found out? An old Texas Instruments calculator I tore apart has a 14 pin interface on the lcd screen, with the first two pins being power! Just like on a regular lcd screen! I am going to atempt to interface my OOPIC to it! If this works, I promise you there will be an ible!

Topic by gimmelotsarobots   |  last reply


Interfacing HC 05 with Atmega?

Somebody please tell me the code to turn ON and OFF a Led on atmega8 board using hc 05 Bluetooth module Some what like this

Question by Mayoogh_Girish   |  last reply


Web Interface for Raspberry Pi

I'm trying to control a led on  raspberry pi 3  using apache server  with  php programming. I am following this instructable link  https://www.instructables.com/id/Simple-and-intuitive-web-interface-for-your-Raspbe/   I have tested server, its working with simple php program but when I write program for led, it doesn't work When I check file it say permission denied  How to resolve this issues ?

Topic by Rehan11 


Phototransistors interfacing with a serial port

So I really don't have too much experience with interfacing stuff and PCs (read: none) and I have a question. If I was to wire up about 5 phototransistors in series, all with a laser aimed at all of them, with the anode hooked up to TxD, and the cathode hooked up to RxD, and I had a program sending 500 bits to it per second, and checking for response.. will it basically be able to detect if one of the lasers are broken? Thanks!

Topic by cvxdes 


How to interfacing cc2500 into pc?

Now, i am stuck in my project this state,the data is transfer to pc using cc2500 and pic,then transfer the data pc to pic16f877a.how to takw the data in pc,also i am using visual studio,but how to get the data in cc2500. please helb me  

Question by kumar manoj   |  last reply


Vision Controlled Interface Controller

Is it possible to make a 360 controller and create a vision controlled (right) c-stick that I can use to aim at something simply by looking at it on the screen? Is this similar to what paralytics use to communicate? Is there any way that I could use that technolgy to OWN my cousin at Halo?

Topic by MattGyver92   |  last reply


Interfacing a robot with landline phones? Answered

What i would like is that i have an answering machine at home that starts after a certain amount of rings. What i want is that when the machine answers the robots listens in and waits for a certain sequence of keys to be pushed. It will then send the tone 1 down the line and somehow i would also like the cal to be ended(but that isn't necessary).

Question by wee_man   |  last reply


interfacing with an old laser spectrometer

I attained a spectrometer and related parts out of an old Beckman Coulter CX7 instrument few searches of the pcbs result in usable information. I'm by no means an expert, but I can solder and have a lot of experience 'tinkering' and as an engineering student I would love to get this thing working.  The images I've attached are of the sensor and control board

Question by BlitzkriegBrain   |  last reply


iRobot PDA or RCX interface

Here are my proposed ideas for the iRobot scholarship package. With todays technology some of the most useful tools are useful because they integrate so well with devices we already have. I have some different ideas about how someone could interface the iRobot with different devices, here are my main ideas. My main goal is to control the iRobot with my Palm Pilot. This could possibly be done via bluetooth or WiFi, but the most convenient solution would be an IR interface. If I succeeded in this I would create an open-source program for the Palm OS that would allow you to remotely control the operation of an iRobot. I'm also interested in interfacing the iRobot with the LEGO RCX (from the Robotics Invention System). Such an interface would allow you to expand off of the iRobot using LEGO components. For example, you could create a robotic arm out of lego, or have the iRobot control a mini lego-bot. Finally, I want to try and use a Super Nintendo Entertainment System (SNES) controller to control the iRobot. This control scheme would feel natural to the operator, while allowing him to guide the robot. Optimally this would be combined with the previous idea (LEGO RCX) for even greater flexibility. If I'm selected for a scholarship package I will work hard to achieve as many of my goals as I can, and I'm sure that the community would benefit from and be able to expand off of my ideas. There is much to gain from the interconnection of todays technology.

Topic by Hungry_Myst   |  last reply


Game Interface Protection Software

 Have you ever had someone break into a password-protected file/folder by finding out the code? Well, if someone made a Game Interface Protection Software, they don't need a code! The software would have these following traits: 1. The user could choose through a variety of games (like chess or poker) to use as the protection. 2. The user could set the game difficulty level. 3. The user could also have a password after the game, just in case someone else got through the game. 4. The user could also have the game set so the person would only be able to win by a certain way. Ex: (On chess) D1 to C4... If someone here could make this software, I'm sure they would have a nice business.

Topic by Blackhawk2   |  last reply


Gameboy/Ipod Interface, eh?

So I have my old Gameboy Color and I have my Ipod. The color doesnt have much use as I dont use it very often but I use the Ipod all the time. I want to put the two together to form something cool and/or intersting. I don't want to simply make a case or anything, I would rather wire up a cartridge to display the...display of the Ipod. Added functionality would be in the use of the buttons to change volume and track and whatnot. Any help would be awesome.

Topic by Danielk   |  last reply


User interface still 'unusable'

I can't believe this but the UI of this site continues to be virtually unusable. I am now trying to respond to a comment in one of my instructables and cannot do something as simple as upload an image. Here is the work-flow: Click 'Add Images'->'upload'->'Upload Files'->nothing->'SELECT FILES'->select an image->nothing Next I go to my member profile. There is not a single link there that allows me to upload images or even see what images are in my library. I tried this in Firefox and Safari with the same results. If I add a link to an image uploaded to a file hoster, which is the preferred way to do it, it does not display. How is anybody supposed to add an image to a post or to their own instructable? This is just basic functionality that is taken for granted in any forum. Why is it so difficult (impossible really) to do this in a forum that relies entirely on images to convey information?

Topic by Laral   |  last reply


Simple Audio to Button interface?

Dear Highly esteemed members of Instructables, I've had this Idea in my head, and I REALLY want to make it possible. I have a feeling that doing so would be a cinch if I had any sort of understanding of wiring at all. Basically, this is my idea. I want to use old buttons (and possibly an analog stick) from a gamecube or n64 controller and wire them so that they play a note when pressed. I don't necessarily need to include the analog stick in my design, if doing so would make the project a good deal harder. I'm looking to include about five buttons. And if the analog stick was included , at best I would want it to move the note in half steps, up or down, but I could also settle for setting it to it's own four notes, or not using it at all. As aforementioned, I have no Idea how any of this stuff works, or if it is even possible. So do let me know if this is even something that someone like me can do. And if it is, try to err on the side of over explaining if you can help it.

Topic by jdiggs1   |  last reply


arduino interfacing with ps2 keyboard

Simple_Testmodify.cpp: In function 'void setup()': Simple_Testmodify:34: error: no matching function for call to 'PS2Keyboard::begin(int&, int&)' C:\Program Files\arduino-1.0\libraries\PS2Keyboard_014A/PS2Keyboard.h:77: note: candidates are: void PS2Keyboard::begin(int) Simple_Testmodify.cpp: In function 'void loop()': Simple_Testmodify:52: error: 'begin' was not declared in this scope THE ABOVE ERROR WAS SHOWN ON VERIFICATION OF THE PROGRAM KINDLY ADVICE THIS WAS THE CODE I USED TO INTER FACE PS2 KEYBOARD WITH ARDUINO UNO  #include int DataPin = 8; int IRQpin =  3; PS2Keyboard keyboard; void setup() {   delay(1000);   keyboard.begin(DataPin,IRQpin);   Serial.begin(9600);   Serial.println("Keyboard Test:"); } void loop() {   if (keyboard.available()) {     char PS2_ENTER;     char PS2_TAB;     char PS2_ESC;     char PS2_PAGEDOWN;     char PS2_PAGEUP;     char PS2_LEFTARROW;     char PS2_RIGHTARROW;     char PS2_UPARROW;     char PS2_DOWNARROW;     char PS2_DELETE;     // read the next key        char c = keyboard.read();         // check for some of the special keys     if (c == PS2_ENTER) {       Serial.println();     } else if (c == PS2_TAB) {       Serial.print("[Tab]");     } else if (c == PS2_ESC) {       Serial.print("[ESC]");     } else if (c == PS2_PAGEDOWN) {       Serial.print("[PgDn]");     } else if (c == PS2_PAGEUP) {       Serial.print("[PgUp]");     } else if (c == PS2_LEFTARROW) {       Serial.print("[Left]");     } else if (c == PS2_RIGHTARROW) {       Serial.print("[Right]");     } else if (c == PS2_UPARROW) {       Serial.print("[Up]");     } else if (c == PS2_DOWNARROW) {       Serial.print("[Down]");     } else if (c == PS2_DELETE) {       Serial.print("[Del]");     } else {             // otherwise, just print all normal characters       Serial.print(c);     }   } }

Topic by akshay12345   |  last reply


Arduino Media Center interfaces?

I have a new project idea which is generally a mini media center console using a beagleboard single board computer and an arduino.  Essentially, I would like to run windows 7 or maybe a bare linux, as all I really need here is to run iTunes.  I would like the arduino to act as a IR remote receiver for an HP mobile remote that I have from an old laptop. Also, I have a 2 line display like this and want to also connect it to the arduino so that it will display the name of the song playing and the timing (like the duration of the song and how much of it has played...)  The arduino itself is not the problem, rather i am at a loss as to how i can get the necessary data from the computer.  Please help me out there. Also, I am planning to get a wifi adapter so that i can use my iPod Touch as an additional remote for iTunes.  I plan to house everything in an OKW Diatec enclosure and maybe put a few push switches on there also to have "onboard" play/pause and volume up/down functionality.  This case is designed for displays really, so if anyone can recommend a good deal for like a 7 inch display with VGA, DVI, or S Video hookup, that would be pretty cool.  Maybe even a touchscreen. I would love to hear any comments on this project IDEA that i have come up with so far.  Its just something i came across and thought that it would be cool to do this without an actual laptop.  Beagleboard is a single board computer but its small enough to not make that an issue Thanks

Question by raykholo 


Interface RS232 to 12 Volt One Wire

I am interested in a circuit to interface an RS232 to a special 12 volt ONE-WIRE circuit.  It is special because it is an controller used in industry.  So I have a MAX3232 to convert my Arduino to RS232 levels, but that will get me to 2 wires.  I need to be able to make that into a ONE-Wire at 12 volt levels (not 3-5 etc) .  I see the MAXIM circuit (attached) for converting to one-wire at lower levels, but can't find anything to utilize a 12 volt one-wire level.  Hope I am being clear and thanks for your assistance.

Topic by appliancer   |  last reply


How to interface BH1750 light sensor to arduino uno rev 3 and LED bulb to achieve automatic dimming LED bulb?

The light that the LED bulb will be given off will corresponds to the light intensity that the light sensor will detect 

Question by misaelrnguho   |  last reply


OBD-II Anyone?

 So.... I'd like to interface my XP laptop with my 94 Buick's OBD-II. They seem to run about $150. I dont wanna pay that unless I have to. Any suggestions, advice? A treat for clicking :D

Topic by KentsOkay   |  last reply


Craft-Machine Symbiosis

Guy Debord believed that all new forms of media served to further alieniate individuals from one another. McLuhan was of the opinion that all new forms of media take as its medium existing forms of media. So... knowing both of those "facts," I am still left kind of perpexled and speechless by this knit laptop interface that its inventors refer to as a BTI (Body-Technology Interface). Could this be the future of personal computing? And what does that say about humanity? Discuss amongst yourselves. (however... I think we can all agree that Becky Stern is a strange duck)

Topic by randofo   |  last reply


Controlling ServoBlaster with Keyboard Keys?

I am working on a project involving multiple servos, a pi, Servoblaster, and a short period of time left. What i was wondering, is that is there a "interface" of sorts for servoblaster that would allow me to control the servos with keys on my keyboard? I saw a thread where someone made an interface where you could switch between servo pins using left and right arrow keys, and adjust the servo with the up and down arrow keys. However, this could only be done one at a time. What i want, is to be able to control all 7 servos with 14 keys. Because of the lack of time (This is needs to be done before next week Saturday) i don't care if i have to access terminal with putty to control said interface. (A web page would be nice, but again, lack of time, and first i need the actual interface.) It really isn't an interface, i guess... I don't need to see what i am pushing/what is happening, so long as the servos move when the keys are pressed. I have a custom ./servod, which basically changes pin layout, and the max and min for the servos. Beyond that, ServoBlaster is vanilla. How would i do this? I haven't written any code for Servoblaster, nor any massive coding in general (I know basics of Python, nothing more.) Is there something like this that exists? Anyone have free time to make it? I am willing to try, so long as i am told what needs to be done. (Time is short, and i am busy. Though, i will still make an effort.) Thanks for your time!

Topic by RocketPenguin   |  last reply


large autonomous robot brain and drive system ideas? Answered

So I have been looking at several different instructables and articles online and I'm really interested in trying to build a large robot of my own, similar to but updated and maybe more refined than the robot butler instructable here. Right now though I'm trying to figure out what I would run it off of (computer, micro controller etc) and how to interface the motors with this control system. Wheelchair motors seem to be a great option for the motors and wheels so what sorts of options do I have to interface that with a computer or how could I interface it with just an arduino or something similar? The robot butler instructable used phidgets and several relays to control everything but I'm wondering if there is a simpler or better way. I want to be able to control the two wheelchair motors and wheels as a base as wells as probably several servo motors for the robot's arms and potentially a webcam and some speakers. Any help anyone can give on ways to do this sort of thing or guidance on how to even begin is greatly appreciated. Thanks! 

Question by dstech   |  last reply


I have a USB webcam, and an LCD screen. Is there a way to connect one to the other, and make a digital viewfinder? Answered

I have a USB webcam, and a small LCD screen. Assuming I cut open the USB wire to power the camera, and do something similar with the LCD screen, is there a way to send the camera data to the LCD screen, without using a desktop as an intermediary? In short, I'd like to make a very simple portable digital viewfinder. Given the relative cheapness of webcams (you can buy a half a dozen for less than $10 on google shopping, versus a single CMOS camera module for the same price), I wanted to see how easy such a thing would be to make. As far as I can tell, it'd just be separating the data output from the rest of the wires-- but having never worked with USB before, I'm not sure. Any help?

Question by kdermod   |  last reply


How would I go about interfacing an arduino with an old joystick from a wheelchair?

I have obtained a joystick module from an electric wheelchair.  The board says DYNAMIC CONTROLS (C) Mar 2011 GPC80830 REV E.  On the underside of the board, there seems to be test pads labeled the following: +5, MOSI, SCK, MISO, RST.  Slightly to the right of +5 is a test pad that says 0V.  Below are pads labeled SBL and SBH.  Slightly more to the right of 0V is a pad labeled SB+D.  Finally, furthest to the right are test pads BCN, BC, and BCP.  On the top side of the board there is an ATMEGA8A AU 1114 Micro-controller and an empty 5 pin through hole connector. Also soldered onto the board is a joystick that consists of a coil and 4 smaller coils soldered to the board in a + configuration around it (Some sort of EMF sensors?), a weird 4 pin connector and a 3 pin programming port resembling an XLR connector. Any ideas?

Question by gpotvin   |  last reply


What would be a suitable serial protocol? Answered

I'm currently working on programming a serial interface to put onto I/O devices (number pad, LCD, sensors, secondary microcontroller...) in order to reduce the amount of I/O pins and external connections needed. The only requirements are that it needs to use only two wires (excluding power), and it needs to be bidirectional. Ideally, I'd like to avoid anything that needs too much processing of data before transmission (like adding extra bits to prevent a string of '1's from setting off the error protection). Hopefully, this project will end up as an instructable at some point, so what would be a suitable protocol that would be compatible with common microcontrollers? Thanks in advance.

Question by The Skinnerz   |  last reply